Sartorius PT-10 User manual

98648-010-97
Operating Instructions | Betriebsanleitung | Mode d’emploi |
Instrucciones de funcionamiento | Istruzioni per l'uso
Sartorius
Portable Meter
PT-1 , PT-1 P, PT-1 -P2
Portable pH/mV Meter | Tragbares pH/mV-Meter |
pH-mètre/millivoltmètre portable | medidor pH/mV portátil | pH/mV-metri portatili

2
English – page 3
In cases involving questions
of interpretation the German-language
version shall prevail.
Deutsch – Seite 25
Im Auslegungsfall ist die
deutsche Sprache maßgeblich.
Français – page 47
En cas de questions concernant
l’interprétation la version
en langue allemande fera autorité.
Español – página 69
En caso de interpretación
la versión en lengua alemana
será determinante.
Italiano – pagina 91
In caso di interpretazione
fa testo la versione
in lingua tedesca.

3
Contents
16 Operating the Meter: pH Mode
18 Standardizing the Meter
for Millivolt Measurement
19 Operating the Meter:
Toggling between Relative mV
Mode and Absolute mV Modes
20 Temperature Compensation
21 Troubleshooting
22 Overview
22 Specifications
23 Accessories
24 Declaration of Conformity
3Contents
4Intended Use
5Warning and Safety Information
6General View of the Equipment
7Getting Started
7 Equipment Supplied
8 Installing the Battery
9 Connecting the Equipment to
AC Power (Optional)
10 Installing Electrodes
13 Standardizing the Meter
for pH Measurement
16 Operating the Meter:
Measurement

4
Intended Use
The PT Portable Meters from Sartorius
measure pH mV and temperature within
the following ranges:
– pH range: 0.00 to 14.00
– Measurement range in mV: -1800 to +1800
– Measurement range in °C: -5 to +105
PT portable meters ease your workload and speed
up your routine with the following features:
– Simple operation
– Rugged sturdy construction
– Battery operation using a 9-volt battery
(optional AC adapter available separately)
– Easy to standardize with 1 2 or 3 standardiza-
tion points
– Automatic buffer detection
– Automatic electrode test during standardization
– Automatic temperature compensation
– Clear readout with easy-to-understand symbols
and LCD

5
Warning and Safety Information
The PT portable meter complies with
the European Council Directives as
well as international regulations and
standards for electrical equipment
electromagnetic compatibility and
the stipulated safety requirements.
Improper use or handling however
can result in damage and/or injury.
§To prevent damage to the equipment
read these operating instructions
thoroughly before using your portable
meter. Keep these instructions in a safe
place. Please observe the following to
ensure safe and reliable operation of
your portable meter:
!Do not use this equipment in hazardous
areas/locations.
!If you use electrical equipment in
installations and under ambient condi-
tions requiring higher safety standards
you must comply with the provisions as
specified in the applicable regulations
for installation in your country.
!If you use an AC adapter make sure
the voltage rating printed on the AC
adapter is identical to your local line
voltage.
– Use Sartorius accessories as these are
optimally designed for use with your
portable meter.
– The buffer solution used for standardi-
zation must match the stored values
exactly.
– Note on installation:
The operator shall be responsible for
any modifications to Sartorius equip-
ment and must check and if necessary
correct these modifications. On request
Sartorius will provide information on
the minimum operating specifications
(in accordance with the Standards listed
above for defined immunity to interfer-
ence).
Industrial protection ratings for the
housing:
– Portable meter: IP67
– AC adapter (optional): IP20
$If you have any problems with your
portable meter:
contact your local Sartorius office
dealer or service center.

Display and keypad:
Rear view:
Display:
6
General View of the Equipment
1LC display
2[Enter] key: Select options
3[Standardize] key:
Activate standardization
functions
4On/off
5Jack for
optional AC adapter
6“Measuring” symbol
7Temperature
8Mode
9Result
1 Texts:
settings/error indicators
11 Buffer symbols
12 Symbols: Standardization
in process; slope symbol
13 “Stability” symbol
14 “Standardize” symbol
15 Low-battery indicator
16 Connector for ATC probe
17 BNC connector for
electrode
18 [Mode] key:
Toggle between pH and
mV mode
19 [Setup] key: Activate device
settings (e.g. to delete
standardization data etc.)
1.68 4.01 6.86 9.18 12.46 S1 S2 S3
32
1%/¡C
Auto
Man
Set
Clear
OK
Error
1234567810101213
Sal
TDS
%DO
mg/L
S/cm cm ion rel mV pH
m
µK
M
°C
S
15
14
13
12
11
17
16
19
18
1
2
3
4
5
6
7
8
9
1

7
Getting Started
Storage and Shipping Conditions
Do not expose the portable meter unnecessarily
to extreme temperatures moisture shocks blows
or vibration.
Unpacking the Portable Meter
§After unpacking the portable meter please check
it immediately for any visible damage.
$If any sign of damage is visible proceed as directed
in the chapter entitled “Care and Maintenance ”
under the section on “Safety Inspection”.
It is a good idea to save the box and all parts
of the packaging until you have successfully
installed your portable meter. Only the original
packaging provides the best protection for
shipment. Before packing your portable meter
unplug all connected cables to prevent damage.
Equipment Supplied
The equipment supplied includes the components
listed below:
PT-10
– pH meter
– 9V battery
PT-10P
– pH meter
– 9V battery
– Gel electrode with temperature sensor (PY-P12)
– Carrying case
– Buffer solution; pH = 4.00 90 ml
– Buffer solution; pH = 7.00 90 ml
– 2 PE bottles 60 ml
PT-10-P20
– pH meter
– 9 V battery
– Gel electrode without temperature sensor
– Carrying case
– Buffer solution; pH = 4.00 90 ml
– Buffer solution; pH = 7.00 90 ml
– 2 PE bottles 60 ml

8
Installing the Battery
$Use only commercially available 9 V batteries. If
desired use a rechargeable battery (not included).
$Rechargeable 9 V batteries are available from
your local electronic supplies dealer.
!If you use a rechargeable battery recharge it with
an external battery charger.
§Lay the portable meter face down.
!Open the battery compartment: Remove the
compartment cover.
§Install the battery in the compartment.
$Make sure the polarity is correct.
!Do not discard used batteries with normal house-
hold waste. Rechargeable batteries contain toxic
materials and must be disposed of in accordance
with local waste disposal regulations.
§Close the battery compartment: Slide the cover
into position until it snaps into place.
Note:
This equipment has been tested and found to
comply with the limits for a Class A digital device
pursuant to Part 15 of the FCC rules. These limits
are designed to provide reasonable protection
against harmful interference when the equipment
is operated in a commercial environment. This
equipment generates uses and can radiate radio
frequency energy and if not installed and used in
accordance with the instruction manual may
cause harmful interference to radio communica-
tions. Operation of this equipment in a residen-
tial area is likely to cause harmful interference
in which case the user will be required to correct
the interference at his own expense. Changes or
modifications not expressly approved by Sartorius
AG could void the user’s authority to operate the
equipment.

9
Connecting the Equipment to AC Power
(Optional)
$Use only original Sartorius equipment;
in Europe:
Power adapters for PT Meters
230 V European plug 102078.1
240 V UK plug 102079.1
100 V Japanese plug 102155.1
230 V Australian plug 102156.1
115 V North American plug 102077.1
This AC power adapter has protection rating IP20
in accordance with the European standard
EN 60529.
§Plug the AC adapter into the wall outlet (mains
supply).
$The pole of the output voltage is connected
to the portable meter housing which can be
grounded for operation.

10
Installing Electrodes
You can use the following electrodes with the
PT portable meter:
– Combination pH electrode with BNC connector
– Separate 2.5 mm phone jack for the ATC probe
– Ion-selective or ORP (redox) electrode with BNC
connector
Installation
1. Remove the protective cover from the electrode.
2. If the pH electrode is dry (e.g. when it is new)
soak it overnight in an electrode filling solution
3-mol/l KCl solution or electrode storage solution
before use.

11
3. Check the device for correct functioning as
follows:
Connect the shorting cap to the BNC input on
the portable meter.
Select mV mode and record the mV value:
Press the [Mode] key
Make sure the portable meter is in mV mode
not relative mV mode. If the mV value is 0 ± 0.3
the meter is functioning correctly. Note that the
long-term drift specified for this portable meter
is 0.1 mV/month since the most recent
standardization.
Connect the electrode to the input connector on
the meter (push in and twist to lock). For high-
precision measurements you can connect an ATC
probe to the ATC port on the portable meter.
4. Rinse and blot-dry electrodes between
measurements (do not wipe). Rinse electrodes
with distilled water deionized water or some
of the next solution to be measured.

12
5. Store pH electrodes in KCl solution or electrode
storage solution. Always leave the filling hole
open when in use and closed when in storage.
Refill with filling solution when the internal
solution drops to 1 inch below the filling hole.
!PT-10P/PT-10-P20 models: The electrode
supplied is a low-maintenance gel-filled
electrode which cannot be re-filled.

13
Standardizing the Meter
for pH Measurement
Because electrodes vary in their response you need
to standardize your pH meter and electrodes to
compensate for variations. The more frequently you
standardize the more accurate your measurements.
For best results standardize at least once a day.
1. Immerse the electrode in standard solution.
Stir gently. Allow the electrode to reach a stable value.
2. If the display is not in pH mode:
Press the [Mode] mode key to toggle to pH mode.
3. Clear the stored standardization data before
performing a new 2- or 3-point standardization:
Press the [Setup] key and then press [Enter].
Existing standardization data is deleted and you can
select a new set of buffers.
[Setup]
[Enter]

14
4. Display the current buffer set:
Press the [Standardize] key.
The current buffer set flashes on the display and the
meter automatically detects the current buffer from
among this set. Once the signal stabilizes the buffer
data is stored automatically. When performing
standardization older data is deleted automatically.
5. The meter displays the slope percentage of the elec-
trode for the first buffer as 100.0%. When you enter a
second or third buffer the meter performs a diagnostic
check on the electrode and displays the slope.
6. To enter a second buffer place the electrode in the
second buffer solution stir allow to stabilize and press
[Standardize]. The meter detects the buffer.
7. Next the meter performs a diagnostic test of the
electrode. The display shows the slope symbol and the
slope % of the electrode.
[Standardize]
[Standardize]

15
8. If “Error” is displayed next to the slope symbol your
electrode is not functioning properly.
The slope must be between 90 and 105%. The portable
meter does not accept or store values displayed with
the “Error” indicator. Press [Enter] to continue.
If no ATC probe is connected during calibration the
meter uses the nominal buffer values at 25°C.
If an ATC probe is connected the meter adjusts contin-
ually for temperature. In this case the pH value of the
buffer at the current temperature is taken into account
when calculating the slope of the electrode.
9. Enter a third standard:
Immerse the electrode in the third buffer solution stir
allow to stabilize and press [Standardize]. Refer to
steps 7 and 8 before continuing.
10.After each buffer is entered the “Standardizing”
symbol switches off and the “Measuring” or “Stability”
symbol is displayed indicating that the meter has
returned to the normal measuring mode.
Standardize your meter and electrode using at least two
buffers with pH values bracketing the expected pH of
your samples.
Note: Stirring shortens the electrode response time.
[Standardize]

16
Operating the Meter:
Measurement
Place the electrode in the medium to be measured so
that both the glass membrane and the diaphragm are
immersed.
Operating the Meter: pH Mode
Function of the [Setup] key:
Press the [Setup] key to access functions for displaying
or deleting standardization data as well as for selecting
the desired set of buffers.
Exiting the Setup mode: Press the [Setup] key again.
1. To delete all standardization data:
Press [Setup]; “Clear” is displayed.
To delete all values press the [Enter] key.
The meter deletes all standardization data and returns
to the measuring mode.
2. Display of the electrode slope:
Following successful standardization with 2 buffers
“OK” is displayed indicating that the electrode tested
is OK. Additionally the slope between the first and
second buffers is displayed (a numeric value and the
“Slope” symbol) along with the corresponding buffer
symbols.
[Setup]
[Enter]

17
3. When three buffers are used:
To view the electrode slope between the second and
third buffers press the [Setup] key again.
The electrode slope between the second and third
buffers is displayed.
4. To view stored buffer sets:
Press the [Setup] key again.
5. To select the displayed buffer set:
Press the [Enter] key.
To select the next set:
Press the [Setup] key.
6. To select NIST buffer sets: Press the [Enter] key.
7. To select “Always shut off manually”:
Press the [Mode] key and then press [Enter] to confirm
or select “Automatic shutoff” (factory setting; turns off
the meter if not used for 20 minutes; available only for
battery operation).
8. To return to the normal measuring mode:
Press the [Setup] key.
To confirm all settings: Press the [Enter] key.
2+[Setup]
[Setup]
[Setup] or [Enter]
[Setup]
1.68 4.01 6.86 9.18 12.46
[Setup]
“SET Auto”
[Mode]
“SET Man”
[Enter]

18
Standardizing the Meter
for Millivolt Measurement
Millivolt measurement is used in electrode diagnostics
titration and in measuring oxidation/reduction (redox)
potential (ORP). ORP measurements indicate the
oxidizing or reducing capacity of a solution. You can
use ORP values to monitor and control solutions that
require a defined level of oxidants or reductants.
1. Immerse the electrode in standard solution.
2. If the display is not in mV mode: Press the [Mode]
mode key to toggle to mV mode.
Standardizing
3. Set a relative mV value:
Press the [Standardize] key.
4. When the signal has stabilized:
The meter automatically stores the measured value.
The current absolute mV value becomes zero relative
millivolts.
[Mode]
[Standardize]

19
Operating the Meter:
Toggling between Relative
and Absolute mV Modes
1. Delete the mV offset and return to the absolute mV
mode: Press the [Setup] key.
“Clear” is displayed.
2. Delete the mV offset:
Press the [Enter] key.
The meter then returns to the absolute mode.
[Setup]
[Enter]

20
Temperature Compensation
!Note: The temperature is compensated automatically
only if an ATC probe is connected.
Temperature has two major effects on pH values:
1. Temperature affects buffer pH values.
The pH value in a buffer is dependent on the tempera-
ture of the buffer. The values are usually given on the
buffer label. Most technical buffers correspond to the
values listed in the table shown here on the left.
When you perform standardization in pH mode the pH
value is adjusted to the current value for the current
temperature.
For example if the buffer has a pH of 7.00 at 25°C and
the current buffer temperature is 20°C the portable
meter standardizes the buffer at pH 7.02.
2. Temperature affects electrode efficiency.
The theoretical voltage change per pH unit is
approximately 59.17 mV at 25°C. This value changes
however as the temperature changes.
The meter compensates for this effect by changing the
pH reading as the temperature changes
Standard buffer:
pH 4.00 pH 7.00 pH 10.00
0 °C 4.005 7.13 10.34
5 °C 4.003 7.10 10.26
10 °C 4.001 7.07 10.19
15 °C 4.002 7.05 10.12
20 °C 4.003 7.02 10.06
25 °C 4.008 7.00 10.00
30 °C 4.010 6.99 9.94
35 °C 4.020 6.98 9.90
40 °C 4.030 6.97 9.85
50 °C 4.061 6.97 9.78